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Triumph sir (EC 20-S)

The Triumph sir is an arithmetic calculator with 8 digits precision and algebraic logic. It has 5 functions, 19 keys, and a VFD (vacuum fluorescent) display. The power source is 3xAAA. The calculator was manufactured in Japan. Note: Adler Sir

Facts at a glance:

FeatureValue
TypeArithmetic
Functions5
Keys19
Precision8
LogicAlgebraic
Display typeVFD
Length92mm
Width62mm
Thickness22mm
Weight63g
Power Source3xAAA
CountryJapan
Year introduced1975
Year discontinued1975

Replacements:

If you have a Triumph sir that is no longer working, you can first try replacing the 3xAAA batteries. If that doesn't solve the problem, then you can consider replacing the calculator with a modern equivalent. We suggest the following current models as possible replacements:

See other calculators by Triumph